TW201423206A - Liquid crystal display panel - Google Patents

Abstract

A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, and an electrode structure. The liquid crystal layer is disposed between the first substrate and the second substrate. The electrode structure is disposed between the first substrate and the second substrate, and the electrode structure is used to generate a horizontal electric field for driving the liquid crystal layer. The electrode structure includes a plurality of sub-electrodes. Each of the sub-electrodes includes a first conductive pattern, a second conductive pattern, and a first insulating layer. The first and the second conductive pattern are disposed in a stack configuration along a vertical projective direction perpendicular to the first substrate and the second substrate. An area of the first conductive pattern is larger than an area of the second conductive pattern. The first insulating layer is disposed between the first and the second conductive pattern.

Description

LCD panel

The present invention relates to a liquid crystal display panel, and more particularly to a liquid crystal display panel which utilizes a sub-electrode of a convex shape to enhance the horizontal electric field effect formed between the sub-electrodes.

With the continuous improvement of liquid crystal display technology, liquid crystal display panels have been widely used in flat-panel televisions, notebook computers, mobile phones and various types of consumer electronic products. The conventional liquid crystal display panel utilizes the characteristics of optical anisotropic of liquid crystal molecules, applies an electric field to drive the liquid crystal molecules to rotate to different alignment states, and exhibits a bright state and a dark state effect together with the polarizer. Generally, the response time of the liquid crystal molecules needs to be 10 milliseconds or more, which limits the frequency of updating the screen of the liquid crystal display panel.

In order to solve the problem that the response time of liquid crystal molecules is too slow, the related industries have developed liquid crystal display panels using blue phase liquid crystals. The blue phase is a liquid crystal state between an isotropic state and a cholesteric phase, and is an unstable lattice state. Moreover, the blue phase liquid crystal has three-dimensional lattice characteristics, but retains the nature of the fluid, so its lattice constant is easily changed, so that the blue phase liquid crystal has a fast response time. In the case of a positive blue phase liquid crystal, it can be maintained in an optically isotropic state when no electric field is applied, and a normally black display effect can be exhibited in the case of a corresponding polarizer. . In contrast, when a horizontal electric field is applied to the positive blue phase liquid crystal, The birefringence (Δn) is changed to exhibit a bright display effect. However, under the current general electrode structure, the driving saturation voltage of the blue phase liquid crystal is relatively high (about 35 volts), so that many problems arising from the high operating voltage requirements are to be overcome.

One of the main objects of the present invention is to provide a liquid crystal display panel in which a sub-electrode of a convex shape is formed by interposing an insulating layer between two conductive patterns to enhance the driving of the liquid crystal layer by a horizontal electric field formed between the sub-electrodes. The effect is thereby achieved by reducing the operating voltage.

In order to achieve the above object, a preferred embodiment of the present invention provides a liquid crystal display panel. The liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, and an electrode structure. The second substrate is disposed corresponding to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The electrode structure is disposed between the first substrate and the second substrate to form a horizontal electric field to drive the liquid crystal layer. The electrode structure includes a plurality of sub-electrodes, and each of the sub-electrodes includes a first conductive pattern, a second conductive pattern, and a first insulating layer. The second conductive pattern is stacked on the first conductive pattern in a vertical projection direction perpendicular to the first substrate and the second substrate. In the vertical projection direction, the area of the first conductive pattern is greater than the area of the second conductive pattern. The first insulating layer is disposed between the first conductive pattern and the second conductive pattern.

This will be appreciated by those of ordinary skill in the art to which the invention pertains. DETAILED DESCRIPTION OF THE INVENTION The following is a detailed description of the preferred embodiments of the invention,

Please refer to Figure 1. FIG. 1 is a schematic view showing a liquid crystal display panel according to a first preferred embodiment of the present invention. For the convenience of description, the drawings of the present invention are only for the purpose of understanding the present invention, and the detailed proportions thereof can be adjusted according to the design requirements. As shown in FIG. 1 , the present embodiment provides a liquid crystal display panel 100 including a first substrate 121 , a second substrate 122 , a liquid crystal layer 130 , and an electrode structure 140 . The second substrate 122 is disposed corresponding to the first substrate 121. The first substrate 121 has an inner surface 121A and an outer surface 121B, the second substrate 122 has an inner surface 122A and an outer surface 122B, and the inner surface 121A faces the inner surface 122A. The liquid crystal layer 130 is disposed between the first substrate 121 and the second substrate 122. The electrode structure 140 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The liquid crystal layer 130 of the present embodiment may include a blue phase liquid crystal, a nematic liquid crystal or other suitable liquid crystal material, and the birefringence (Δn) and dielectric anisotropy of the liquid crystal layer 130 ( The product of Δε) is preferably greater than or equal to 0.5, but is not limited thereto. In the embodiment, the electrode structure 140 includes a plurality of sub-electrodes 141 , and each of the sub-electrodes 141 includes a first conductive pattern 151 , a second conductive pattern 152 , and a first insulating layer 160 . The first insulating layer 160 is disposed between the first conductive pattern 151 and the second conductive pattern 152. The second conductive patterns 152 are stacked on the first conductive pattern 151 in a vertical direction Y perpendicular to the first substrate 121 and the second substrate 122. In the vertical projection direction Y, the area of the first conductive pattern 151 is larger than the area of the second conductive pattern 152.

In this embodiment, each of the sub-electrodes 141 are disposed on the first substrate 121. However, the present invention is not limited thereto, and the sub-electrodes 141 are disposed on the same or different surfaces as needed. Each sub-electrode 141 on the first substrate 121 of the present embodiment is used to form the above-described horizontal electric field between the sub-electrodes 141 to drive the liquid crystal layer 130. The first conductive pattern 151 of each of the sub-electrodes 141 is disposed between the first substrate 121 and the first insulating layer 160, and the first conductive pattern 151 completely covers the second conductive pattern 152 in the vertical projection direction Y. In other words, the first conductive pattern 151, the first insulating layer 160, and the second conductive pattern 152 of each of the sub-electrodes 141 are sequentially stacked on the first substrate 121 from bottom to top. The first conductive pattern 151 and the second conductive pattern 152 may include a transparent conductive material such as indium tin oxide (ITO), indium zinc oxide (IZO), aluminum zinc oxide (AZO), and Indium gallium zinc oxide (IGZO) or other suitable non-transparent conductive material such as silver, aluminum, copper, magnesium, molybdenum, titanium, a composite layer of the above materials or an alloy of the above materials, but not limit. The material of the first insulating layer 160 may each include an inorganic material such as silicon nitride, silicon oxide and silicon oxynitride, an organic material such as an acrylic resin or the like. Material. The first substrate 121 and the second substrate 122 may be an array substrate, a color filter substrate, or a color filter on array substrate (COA substrate), respectively. This is limited to this. In addition, the first insulating layer 160 of each sub-electrode 141 is at least partially exposed to the second conductive pattern 152 in a horizontal direction X parallel to the first substrate 121 and the second substrate 122, and the first of each sub-electrode 141 The conductive pattern 151 can be electrically separated from the second conductive pattern 152, but is not limited thereto.

It should be noted that the distance between the first substrate 121 and the second substrate 122 is preferably greater than or equal to 0.5 micrometers, and the distance between the first conductive pattern 151 and the second conductive pattern 152 of each of the sub-electrodes 141 is preferably It is greater than or equal to 0.1 μm, and the distance between each sub-electrode 141 is preferably greater than or equal to 0.5 μm to form a better driving effect. In other words, the sub-electrode 141 of the present embodiment increases the distance between the second conductive pattern 152 and the first substrate 121 by the first insulating layer 160, so that each sub-electrode 141 can become a first substrate 121. The convex shape is formed on the inner surface 121A, so that the sub-electrodes 141 can be deeper into the liquid crystal layer 130 in the vertical projection direction Y, and the driving effect of the horizontal electric field formed between the sub-electrodes 141 on the liquid crystal layer 130 can be obtained. Upgrade. Therefore, the liquid crystal display panel 100 of the present embodiment can achieve the effect of reducing the operating voltage. It should be noted that the first insulating layers 160 of the sub-electrodes 141 of the embodiment are separated from each other such that the liquid crystal layer 130 can be sufficiently filled into the space between the sub-electrodes 141 to increase the sub-electrodes 141. The effect of horizontal electric field drive between. In addition, in the embodiment, the area of the first conductive pattern 151 is larger than the area of the second conductive pattern 152. The design of the structure is not only beneficial for reducing the difficulty in manufacturing, but also for improving the transmittance. .

In this embodiment, the first conductive pattern 151 and the second conductive pattern 152 of each sub-electrode 141 can be applied with the same or different driving voltages to form a desired horizontal electric field between the two adjacent sub-electrodes 141. The above driving voltage may include a positive driving voltage, a negative driving voltage or a common voltage, but is not limited thereto. For example, the first conductive pattern 151 and the second conductive pattern 152 of one sub-electrode 141 can be respectively applied The positive polarity driving voltage and the negative polarity driving voltage are applied, and the adjacent one of the other sub-electrodes 141, the first conductive pattern 151 and the second conductive pattern 152, can be respectively applied with a negative driving voltage and a positive driving voltage to make the two phases A horizontal electric field can be formed between the adjacent sub-electrodes 141. In contrast, the first conductive pattern 151 and the second conductive pattern 152 of one sub-electrode 141 can be simultaneously applied with a positive polarity driving voltage, and the adjacent one of the other sub-electrodes 141, the first conductive pattern 151 and the second conductive pattern 152 can be At the same time, a negative polarity driving voltage is applied so that a horizontal electric field can be formed between the two adjacent sub-electrodes 141. The present invention is not limited to the above-described driving voltage combination, and the visual design requires that a suitable driving voltage is applied to the first conductive pattern 151 and the second conductive pattern 152 of each sub-electrode 141 to form a desired horizontal electric field effect. It should be noted that when the liquid crystal layer 130 is a blue phase liquid crystal, the liquid crystal layer 130 may have optical isotropicity when no electric field is applied, and may be matched with a suitable polarizer (not shown) to achieve a normally black display. The effect is that when the liquid crystal layer 130 is driven by the horizontal electric field formed between the sub-electrodes 141, a bright display effect can be formed, but it is not limited thereto. Therefore, the liquid crystal display panel 100 of the present embodiment can achieve the effects of reducing the operating voltage and increasing the transmittance by the structural design of the sub-electrode 141.

The different embodiments of the liquid crystal display panel of the present invention are described below, and the following description is mainly for the sake of simplification of the description of the embodiments, and the detailed description is not repeated. In addition, the same elements in the embodiments of the present invention are denoted by the same reference numerals to facilitate the comparison between the embodiments.

Please refer to Figures 2 to 4. Figure 2 is a diagram showing a second preferred embodiment of the present invention. A schematic diagram of a liquid crystal display panel. Fig. 3 is a top plan view of the liquid crystal display panel of the embodiment. Fig. 4 is a schematic cross-sectional view taken along line A-A' in Fig. 3. As shown in FIG. 2, the liquid crystal display panel 200 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 240. The electrode structure 240 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 240 includes a plurality of sub-electrodes 241 disposed on the inner surface 121A of the first substrate 121 . Each of the sub-electrodes 241 includes a first conductive pattern 151 , a second conductive pattern 152 , and a first insulating layer 160 . The difference from the first preferred embodiment is that the sub-electrode 241 further includes a second insulating layer 270 disposed between the first substrate 121 and the first conductive pattern 151. The second insulating layer 270 of each sub-electrode 241 is at least partially exposed to the outside of the first conductive pattern 151 and the second conductive pattern 152 in the horizontal direction X. In other words, the second insulating layer 270, the first conductive pattern 151, the first insulating layer 160, and the second conductive pattern 152 of each of the sub-electrodes 241 are sequentially stacked on the first substrate 121 from bottom to top. The first conductive patterns 151 of the sub-electrodes 241 of the present embodiment are not in direct contact with the inner surface 121A of the first substrate 121, and the sub-electrodes 141 are the first conductive patterns 151 and the second by the second insulating layer 270. The distance between the conductive patterns 152 and the first substrate 121 is increased, so that the sub-electrodes 241 can penetrate the liquid crystal layer 130 in the vertical projection direction Y to further enhance the horizontal electric field formed between the sub-electrodes 241. 130 drive effect.

As shown in FIG. 3 and FIG. 4 , the liquid crystal display panel 200 further includes a plurality of connecting lines 280 electrically connected to the corresponding sub-electrodes 241 . The first conductive pattern 151 and the second conductive pattern 152 of each sub-electrode 241 can be electrically connected through corresponding connecting lines 280 The first driving pattern 151 and the second conductive pattern 152 of the respective sub-electrodes 241 are applied with the same driving voltage, but not limited thereto. The other end of each of the connecting lines 280 connected to the sub-electrode 241 can be connected to a switching element (not shown) such as a thin film transistor to provide a driving voltage to the corresponding sub-electrode 241, but is not limited thereto. In addition, the two adjacent sub-electrodes 241 can be respectively a comb-like structure and are staggered with each other to form a preferred horizontal electric field effect, but not limited thereto. The liquid crystal display panel 200 of the present embodiment, except for the second insulating layer 270, is similar to the above-described first preferred embodiment in terms of the arrangement, material characteristics, and driving manner of the other components, and thus will not be described herein. It should be noted that the second insulating layers 270 of the sub-electrodes 241 of the present embodiment are separated from each other so that the liquid crystal layer 130 can be sufficiently filled into the space between the sub-electrodes 241 to increase the sub-electrodes 241. The effect of horizontal electric field drive between.

Please refer to Figure 5. FIG. 5 is a schematic view showing a liquid crystal display panel according to a third preferred embodiment of the present invention. As shown in FIG. 5, the liquid crystal display panel 300 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 340. The electrode structure 340 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 340 includes a plurality of sub-electrodes 341 disposed on the inner surface 121A of the first substrate 121 . Each of the sub-electrodes 341 includes a first conductive pattern 151 , a second conductive pattern 152 , and a first insulating layer 160 . The difference from the first preferred embodiment is that the sub-electrode 341 further includes a second insulating layer 370 disposed on the second conductive pattern 152, and the second conductive pattern 152 is disposed on the first insulating layer 160 and Between the two insulating layers 370. In other words, the first conductive pattern 151 of each sub-electrode 341, the first insulating layer 160, the second conductive pattern 152, and the second insulation The layer 370 is sequentially stacked on the first substrate 121 from bottom to top. The second insulating layer 370 of each sub-electrode 341 is at least partially exposed to the outside of the second conductive pattern 152 in the horizontal direction X. The second insulating layers 370 of the respective sub-electrodes 341 are separated from each other such that the liquid crystal layer 130 can sufficiently fill the space between the sub-electrodes 341 to increase the effect of being driven by the horizontal electric field between the sub-electrodes 341. The liquid crystal display panel 300 of the present embodiment, except for the second insulating layer 370, is similar to the above-described first preferred embodiment in terms of the arrangement, material characteristics, and driving manner of the other components, and thus will not be described herein.

Please refer to Figure 6. FIG. 6 is a schematic view showing a liquid crystal display panel according to a fourth preferred embodiment of the present invention. As shown in FIG. 6, the liquid crystal display panel 400 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 440. The electrode structure 440 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 440 includes a plurality of sub-electrodes 441 disposed on the inner surface 121A of the first substrate 121 . Each of the sub-electrodes 441 includes a first conductive pattern 151 , a second conductive pattern 152 , and a first insulating layer 160 . The difference from the third preferred embodiment is that each sub-electrode 441 further includes a third conductive pattern 453 disposed on the second insulating layer 370, and the area of the second conductive pattern 152 in the vertical projection direction Y. It is larger than the area of the third conductive pattern 453. In other words, the first conductive pattern 151, the first insulating layer 160, the second conductive pattern 152, the second insulating layer 370, and the third conductive pattern 453 of each of the sub-electrodes 441 are sequentially stacked from the bottom to the top. On the substrate 121. Each sub-electrode 441 is disposed by the second insulating layer 370 and the third conductive pattern 453 such that each sub-electrode 441 can penetrate the liquid crystal layer 130 in the vertical projection direction Y to further enhance the formation between the sub-electrodes 441. Horizontal electric field pair The driving effect of the liquid crystal layer 130. The liquid crystal display panel 400 of the present embodiment, except for the third conductive pattern 453, is similar to the above-described third preferred embodiment in terms of the arrangement, material characteristics, and driving manner of the other components, and thus will not be described herein.

Please refer to Figure 7, and please refer to Figure 1, Figure 2, Figure 5 and Figure 6. FIG. 7 is a schematic diagram showing a comparison of driving voltage-transmission curves of the liquid crystal display panel of the second, third, and fourth preferred embodiments of the present invention and a liquid crystal display panel of a control group. As shown in FIG. 1, FIG. 2, FIG. 5, FIG. 6, and FIG. 7, the curve L2 in FIG. 7 represents the driving voltage-penetration of the liquid crystal display panel 200 of the second preferred embodiment described above. The relationship curve of the rate, the curve L3 represents the driving voltage-transmittance curve of the liquid crystal display panel 300 of the third preferred embodiment, and the curve L4 represents the driving voltage of the liquid crystal display panel 400 of the fourth preferred embodiment described above - The transmittance curve, the curve L0 represents a driving voltage-transmission curve of a conventional liquid crystal display panel (here, as a control group). It can be seen from the condition between the curves in FIG. 7 that under the structure of each embodiment of the present invention, the sub-electrode design of the convex shape can obtain a high transmittance effect at a relatively low driving voltage, so that it can be effectively achieved. Reduce the operating voltage and increase the penetration rate.

Please refer to Figure 8. FIG. 8 is a schematic view showing a liquid crystal display panel according to a fifth preferred embodiment of the present invention. As shown in FIG. 8, the liquid crystal display panel 500 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 540. The electrode structure 540 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. Electrode structure 540 includes a plurality of sub-electrodes 441. The difference from the fourth preferred embodiment is that in the electrode structure 540, part of the sub-electrodes 441 are disposed on the inner surface 121A of the first substrate 121, and the other sub-electrodes 441 are disposed in the second substrate 122. On the surface 122A, each sub-electrode 441 on the first substrate 121 is used to form a horizontal electric field with each sub-electrode 441 on the second substrate 122 to drive the liquid crystal layer 130. The first conductive pattern 151 of each of the sub-electrodes 441 on the second substrate 122 is disposed between the second substrate 122 and the first insulating layer 160, and the first conductive pattern 151 is completely covered by the second conductive in the vertical projection direction Y. Pattern 152. The third conductive pattern 453 of each of the sub-electrodes 441 on the second substrate 122 is disposed on the second insulating layer 370, and the area of the second conductive pattern 152 in the vertical projection direction Y is larger than the area of the third conductive pattern 453. . In other words, the first conductive pattern 151, the first insulating layer 160, the second conductive pattern 152, the second insulating layer 370, and the third conductive pattern 453 of each of the sub-electrodes 441 on the second substrate 122 are sequentially Stack settings below, but not limited to this. The liquid crystal display panel 500 of the present embodiment is similar to the above-described fourth preferred embodiment except that a part of the sub-electrodes 441 are disposed on the second substrate, and the other components are similar to the fourth preferred embodiment. I will not repeat them.

Figure 9 is a schematic view showing a liquid crystal display panel of a sixth preferred embodiment of the present invention. As shown in FIG. 9, the liquid crystal display panel 600 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 640. The electrode structure 640 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 640 includes a plurality of sub-electrodes 141. The difference from the first preferred embodiment described above is that in the electrode structure 640, a portion of the sub-electrodes 141 The sub-electrode 141 is disposed on the inner surface 121A of the first substrate 121, and the sub-electrodes 141 on the first substrate 121 are disposed on the inner surface 122A of the second substrate 122. A horizontal electric field is formed between each of the sub-electrodes 141 to drive the liquid crystal layer 130. The liquid crystal display panel 600 of the present embodiment is similar to the above-described first preferred embodiment except that a part of the sub-electrodes 141 are disposed on the second substrate, and the other components are similar to the above-described first preferred embodiment. I will not repeat them. It should be noted that the first conductive patterns 151, the first insulating layer 160, and the second conductive patterns 152 of the sub-electrodes 141 on the second substrate 122 are sequentially stacked from top to bottom, but are not limited thereto. .

Figure 10 is a schematic view showing a liquid crystal display panel of a seventh preferred embodiment of the present invention. As shown in FIG. 10, the liquid crystal display panel 700 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 740. The electrode structure 740 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 740 includes a plurality of sub-electrodes 241. The difference from the second preferred embodiment is that in the electrode structure 740, part of the sub-electrodes 241 are disposed on the inner surface 121A of the first substrate 121, and other sub-electrodes 241 are disposed in the second substrate 122. The surface electrodes 122A and the sub-electrodes 241 on the first substrate 121 are used to form a horizontal electric field with the sub-electrodes 241 on the second substrate 122 to drive the liquid crystal layer 130. The second insulating layer 270 of each of the sub-electrodes 241 on the second substrate 122 is disposed between the second substrate 122 and the first conductive pattern 151, and the second insulating layer 270 of each of the sub-electrodes 241 on the second substrate 122 is At least partially exposed to the outside of the first conductive pattern 151 and the second conductive pattern 152 in the horizontal direction X. In other words The second insulating layer 270, the first conductive pattern 151, the first insulating layer 160, and the second conductive pattern 152 of each of the sub-electrodes 241 on the second substrate 122 are sequentially stacked from top to bottom, but not This is limited. The liquid crystal display panel 700 of the present embodiment is similar to the second preferred embodiment except that a part of the sub-electrodes 241 are disposed on the second substrate, and the other components are similar to the second preferred embodiment. I will not repeat them.

Figure 11 is a schematic view showing a liquid crystal display panel of an eighth preferred embodiment of the present invention. As shown in FIG. 11, the liquid crystal display panel 800 of the present embodiment includes a first substrate 121, a second substrate 122, a liquid crystal layer 130, and an electrode structure 840. The electrode structure 840 is disposed between the first substrate 121 and the second substrate 122 to form a horizontal electric field to drive the liquid crystal layer 130. The electrode structure 840 includes a plurality of sub-electrodes 341. The difference from the third preferred embodiment is that in the electrode structure 840, part of the sub-electrodes 341 are disposed on the inner surface 121A of the first substrate 121, and the other sub-electrodes 341 are disposed in the second substrate 122. The surface electrodes 122A and the sub-electrodes 341 on the first substrate 121 are used to form a horizontal electric field with the sub-electrodes 241 on the second substrate 122 to drive the liquid crystal layer 130. The second insulating layer 370 of each sub-electrode 341 on the second substrate 122 is disposed on the second conductive pattern 152, and the second insulating layer 370 of each sub-electrode 341 on the second substrate 122 is at least horizontally X. Partially exposed outside of the second conductive pattern 152. In other words, the first conductive patterns 151, the first insulating layer 160, the second conductive patterns 152, and the second insulating layer 370 of each of the sub-electrodes 341 on the second substrate 122 are sequentially stacked from top to bottom, but Not limited to this. The liquid crystal display panel 800 of the embodiment is provided on the second substrate except for a part of the sub-electrodes 341. The arrangement of the remaining components, the material characteristics, and the driving manner are similar to those of the third preferred embodiment described above, and thus are not described herein again.

In summary, the liquid crystal display panel of the present invention forms a sub-electrode of a convex shape by interposing an insulating layer between two conductive patterns, and the horizontal electric field formed between the sub-electrodes is raised by the sub-electrode deep into the liquid crystal layer. For the driving effect of the liquid crystal layer, the purpose of reducing the operating voltage is achieved. In addition, the liquid crystal display panel of the present invention can also achieve the effects of reducing the operating voltage and improving the penetration in the normal black mode operation.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100‧‧‧LCD panel

121‧‧‧First substrate

121A‧‧‧ inner surface

121B‧‧‧ outer surface

122‧‧‧second substrate

122A‧‧‧ inner surface

122B‧‧‧Outer surface

130‧‧‧Liquid layer

140‧‧‧Electrode structure

141‧‧‧Subelectrode

151‧‧‧First conductive pattern

152‧‧‧Second conductive pattern

160‧‧‧First insulation

200‧‧‧LCD panel

240‧‧‧Electrode structure

241‧‧‧Subelectrode

270‧‧‧Second insulation

280‧‧‧Connecting line

300‧‧‧LCD panel

340‧‧‧Electrode structure

341‧‧‧Subelectrode

370‧‧‧Second insulation

400‧‧‧LCD panel

440‧‧‧Electrode structure

441‧‧‧Subelectrode

453‧‧‧ Third conductive pattern

500‧‧‧LCD panel

540‧‧‧Electrode structure

600‧‧‧LCD panel

640‧‧‧Electrode structure

700‧‧‧LCD panel

740‧‧‧Electrode structure

800‧‧‧LCD panel

840‧‧‧Electrode structure

L0‧‧‧ curve

L2‧‧‧ curve

L3‧‧‧ curve

L4‧‧‧ Curve

X‧‧‧ horizontal direction

Y‧‧‧Vertical projection direction

FIG. 1 is a schematic view showing a liquid crystal display panel according to a first preferred embodiment of the present invention.

FIG. 2 is a schematic view showing a liquid crystal display panel according to a second preferred embodiment of the present invention.

FIG. 3 is a top plan view of a liquid crystal display panel according to a second preferred embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view taken along line A-A' in Fig. 3.

FIG. 5 is a schematic view showing a liquid crystal display panel according to a third preferred embodiment of the present invention.

FIG. 6 is a schematic view showing a liquid crystal display panel according to a fourth preferred embodiment of the present invention.

FIG. 7 is a schematic diagram showing a comparison of driving voltage-transmission curves of the liquid crystal display panel of the second, third, and fourth preferred embodiments of the present invention and a liquid crystal display panel of a control group.

FIG. 8 is a schematic view showing a liquid crystal display panel according to a fifth preferred embodiment of the present invention.

Figure 9 is a schematic view showing a liquid crystal display panel of a sixth preferred embodiment of the present invention.

Figure 10 is a schematic view showing a liquid crystal display panel of a seventh preferred embodiment of the present invention.

Figure 11 is a schematic view showing a liquid crystal display panel of an eighth preferred embodiment of the present invention.

121‧‧‧First substrate

121A‧‧‧ inner surface

121B‧‧‧ outer surface

122‧‧‧second substrate

122A‧‧‧ inner surface

122B‧‧‧Outer surface

130‧‧‧Liquid layer

151‧‧‧First conductive pattern

152‧‧‧Second conductive pattern

160‧‧‧First insulation

200‧‧‧LCD panel

240‧‧‧Electrode structure

241‧‧‧Subelectrode

270‧‧‧Second insulation

X‧‧‧ horizontal direction

Y‧‧‧Vertical projection direction

Claims (26)

A liquid crystal display panel includes: a first substrate; a second substrate disposed corresponding to the first substrate; a liquid crystal layer disposed between the first substrate and the second substrate; and an electrode structure disposed on Between the first substrate and the second substrate, a horizontal electric field is formed to drive the liquid crystal layer, wherein the electrode structure comprises a plurality of sub-electrodes, and each of the sub-electrodes comprises: a first conductive pattern; a second conductive The pattern is stacked on the first conductive pattern along a vertical projection direction perpendicular to the first substrate and the second substrate, wherein the first conductive pattern has an area larger than the second in the vertical projection direction An area of the conductive pattern; and a first insulating layer disposed between the first conductive pattern and the second conductive pattern. The liquid crystal display panel of claim 1, wherein at least a portion of the sub-electrode systems are disposed on the first substrate, and the horizontal electric field is formed between at least a portion of the sub-electrodes on the first substrate. The liquid crystal display panel of claim 2, wherein the first conductive pattern of each of the sub-electrodes on the first substrate is disposed between the first substrate and the first insulating layer, and the first conductive pattern Completely covering the second conductive pattern in the vertical projection direction case. The liquid crystal display panel of claim 1, wherein the first insulating layer of each of the sub-electrodes is at least partially exposed to the second conductive pattern in a horizontal direction parallel to the first substrate and the second substrate. outer. The liquid crystal display panel of claim 2, wherein each of the sub-electrodes on the first substrate further comprises a second insulating layer disposed between the first substrate and the first conductive pattern. The liquid crystal display panel of claim 5, wherein the second insulating layer of each of the sub-electrodes on the first substrate is at least partially exposed in a horizontal direction parallel to the first substrate and the second substrate The first conductive pattern is outside the second conductive pattern. The liquid crystal display panel of claim 2, wherein each of the sub-electrodes on the first substrate further comprises a second insulating layer disposed on the second conductive pattern. The liquid crystal display panel of claim 7, wherein the second insulating layer of each of the sub-electrodes on the first substrate is at least partially exposed in a horizontal direction parallel to the first substrate and the second substrate Outside the second conductive pattern. The liquid crystal display panel of claim 7, wherein each of the sub-electrodes on the first substrate further comprises a third conductive pattern disposed on the second insulating layer, and the second conductive layer is in the vertical projection direction. The area of the pattern is larger than the surface of the third conductive pattern product. The liquid crystal display panel of claim 1, wherein the first conductive pattern of each of the sub-electrodes is electrically connected to the second conductive pattern. The liquid crystal display panel of claim 1, wherein the first conductive pattern of each of the sub-electrodes is electrically separated from the second conductive pattern. The liquid crystal display panel of claim 1, wherein the first conductive pattern of each of the sub-electrodes and the second conductive pattern are applied with the same driving voltage. The liquid crystal display panel of claim 12, wherein the driving voltage comprises a positive driving voltage, a negative driving voltage or a common voltage. The liquid crystal display panel of claim 1, wherein the first conductive pattern and the second conductive pattern of each of the sub-electrodes are respectively applied with different driving voltages. The liquid crystal display panel of claim 1, wherein a distance between the first conductive pattern and the second conductive pattern of each of the sub-electrodes is greater than or equal to 0.1 micrometer. The liquid crystal display panel of claim 1, wherein a distance between each of the sub-electrodes is greater than or equal to 0.5 micrometers. The liquid crystal display panel of claim 1, wherein the liquid crystal layer is not applied with an electric field It has optical isotropic properties. The liquid crystal display panel of claim 1, wherein the liquid crystal layer comprises a blue phase liquid crystal or a nematic liquid crystal. The liquid crystal display panel of claim 1, wherein the sub-electrode systems are disposed on the first substrate, and the horizontal electric field is formed between at least a portion of the sub-electrodes. The liquid crystal display panel of claim 1, wherein at least a portion of the sub-electrode systems are disposed on the first substrate, at least a portion of the sub-electrodes are disposed on the second substrate, and the first substrate is Each of the sub-electrodes is configured to form the horizontal electric field with each of the sub-electrodes on the second substrate. The liquid crystal display panel of claim 20, wherein the first conductive pattern of each of the sub-electrodes on the second substrate is disposed between the second substrate and the first insulating layer, and the first conductive pattern The second conductive pattern is completely covered in the vertical projection direction. The liquid crystal display panel of claim 20, wherein each of the sub-electrodes on the second substrate further comprises a second insulating layer disposed between the second substrate and the first conductive pattern. The liquid crystal display panel of claim 22, wherein each of the sub-substrates The second insulating layer of the electrode is at least partially exposed to the first conductive pattern and the second conductive pattern in a horizontal direction parallel to the first substrate and the second substrate. The liquid crystal display panel of claim 20, wherein each of the sub-electrodes on the second substrate further comprises a second insulating layer disposed on the second conductive pattern. The liquid crystal display panel of claim 24, wherein the second insulating layer of each of the sub-electrodes on the second substrate is at least partially exposed in a horizontal direction parallel to the first substrate and the second substrate Outside the second conductive pattern. The liquid crystal display panel of claim 25, wherein each of the sub-electrodes on the second substrate further comprises a third conductive pattern disposed on the second insulating layer, and the second conductive layer is in the vertical projection direction. The area of the pattern is greater than the area of the third conductive pattern.